Archive for the ‘Respiratory Disease’ Category

The reasons for the few discrepancies in Pa02 between the COS-5 and continuous flow of oxygen in our study are not readily apparent. There were six instances (in four patients) out of the 31 comparisons of the two modes of delivery in which the Pa02 differed by more than ±5 mm Hg (the accuracy of […]

Previous studies of pulsed demand oxygen delivery systems have reported equivalent oxygenation at rest in patients with pulmonary disease when oxygen is delivered by pulsed and continuous modes. However, since ambulation is essential for all patients with chronic pulmonary disease, it is important to ensure that these devices provide adequate oxygenation during exercise. We have […]

The COS-5 was well tolerated by all patients, and they noted little difference from continuous flow delivery during exercise. Figure 1 and Table 2 compare the arterial oxygen tensions achieved during continuous oxygen delivery and during demand delivery by the COS-5, at differing oxygen flow rates in patients with COPD (Fig 1 upper), and IPF […]

Subjects Twelve patients, six with COPD (five men and one woman) and six with IPF (five men and one woman), whose demographic and pulmonary function data are presented in Table 1, served as subjects in this study. The diagnosis of IPF was confirmed by open lung biopsy in all patients. The mean TLC was elevated […]

Long-term oxygen therapy is being prescribed in- creasingly in patients with chronic lung disease, sleep apnea, and kyphoscoliosis, and it is well recognized that supplemental oxygen for more than 20 hours per day in patients with COPD increases survival. However, oxygen concentrators and large oxygen cylinders, which are used extensively to deliver oxygen in the […]